Consider a Normally Distribution Population with Known Variance

question 156

Multiple Choice

Consider a normally distribution population with known variance.A 95% confidence interval is computed based on sample of 25 observations.If we take a new sample of 100 observations and compute a second 95% confidence interval based on the new sample,we know that the width of the second confidence interval will be exactly ____ times the width of the first confidence interval.

• A)2
• B)0.5
• C)4
• D)0.25
• E)We cannot answer this question without knowing the sample means from both samples.

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Definitions:

Offspring

The biological children or young produced by an organism, either through sexual or asexual reproduction.

Symbiotic Relationships

Close interactions between species that live together, often mutually beneficial, but can also include parasitic and commensal relationships.

Parasitism

Symbiotic relationship in which one species (the parasite) benefits in terms of growth and reproduction, to the detriment of the other species (the host).

Mutualism

Symbiotic relationship in which both species benefit in terms of growth and reproduction.